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US 2010/0137919 A1Published application
Bone screw
OwnerDietmar Wolterinventor
Life of this patent
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Abstract
The invention relates to a bone screw with a shaft that defines a longitudinal axis and with a head that is configured as a thickened portion, said shaft and head being threaded. The thread of the shaft (bone thread) merges in an uninterrupted manner into the thread on the flared area of the head adjoining the shaft. As a result, part of the threaded head lies in the osseous tissue, giving a larger contact surface between bone screw and bone and improving the distribution and transmission of the loads and forces.
Claims15
A bone screw comprising:
- a shaft defining a longitudinal axis and comprising a bone thread;
- and
- a head is configured as a thickened portion and comprising a flared area with a thread merging in an uninterrupted manner into the shaft's bone thread,
- wherein when a bone plate is fixed to a bone by means of the bone screw, part of the flared area of the head of the bone screw passes through a through-hole in the bone plate and comes to lie in osseous tissue.
1 more element
Dependencies are inferred from the claim text.